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JavaScript String to Number Conversion Methods
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- Core Functions
- Number() function converts strings to numbers, returning NaN for invalid inputs
- parseInt() converts strings to integers with optional radix (2-36)
- parseFloat() converts strings to floating point numbers
- Manual Conversion Methods
- Unary plus (+) operator converts strings to numbers
- Multiplying string by 1 or dividing by 1 converts to integer
- Subtracting 0 from string converts to integer
- Bitwise NOT (~) operator converts to 32-bit signed integers
- Rounding Functions
- Math.floor() rounds down to nearest integer
- Math.ceil() rounds up to nearest integer
- Math.round() rounds to nearest integer
- Additional Notes
- Leading/trailing whitespace affects float conversion
- Non-numeric characters return NaN
- Methods work for both integers and floating point numbers